一种基于正交投影的波束形成算法  

A beam-forming algorithm based on orthogonal projection

作　　者：唐玲[1] 王建英[1] 

机构地区：[1]西南交通大学信息科学与技术学院,四川成都610031

出　　处：《成都信息工程学院学报》2007年第4期427-430,共4页Journal of Chengdu University of Information Technology

摘　　要：提出了一种基于正交投影的波束形成算法。首先由MVDR算法确定初始权向量;其次根据该权向量与其它用户波达角方向的关系,建立干扰信号的导向矢量矩阵;然后通过正交投影原理,将期望信号的导向矢量投影到干扰信号的零空间上,从而求得最优权值。仿真结果证明了该算法的有效性。The MVDR algorithm is used to determine the initial weight vector. In view of the DOA of the other signals attained from the weight vector of the algorithm the steering vectors matrix of the interference signals are established. According to the orthogonal projection theory the steering vector of the expected signals is projected to the null space of the interference signals. The validity of the proposed algorithm is confirmed by the computer simulation.

关 键 词：波束形成 波达角 导向矢量 正交投影 

分 类 号：TN911.7[电子电信—通信与信息系统]